Adsorption heat storage is based is the interaction between a liquid sorbate, usually water, and a solid sorbent (e.g. zeolites, silica gels, activated carbons). Heat is employed to drive a desorption process, which means that energy is stored in the form of adsorption potential energy. It is considered a promising technology both for seasonal and daily storage applications, although there is still need for development and research at materials, components and system level in order to make the technology commercially competitive.
